Ezea eipley



N.FETERB, PHOTOJJTNOGRAPNER, WASHINGTON. D vC.

UNITED STATES PATENT OFFICE,

EZRA RIPLEY, or rrRoY, NEW YORK.

CHILLS FOR CASTING RASPS, FILES, 80C.

Specification forming part of Letters Patent No. 6,510, dated June, 1849.

To all whom it may concern.-

Be it known that I, EZRA RIPLEY, of Troy, in the county of Rensselaer and State of New York, have invented certain new and useful improvementsin the construction of chill-dies for the casting of rasps, floats, and other articles in which a sharp tooth or edge is required, the same being cast ot' iron, which die I call the Union Die and l do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, making a part of this specification, in which- Figure l is a perspective view of a series of strips or plates ot' metal for a chill-die, onehalt' of which represents a form for a toothed rasp, and the other half a float; and Fig. 2 represents a strip of metal, it being oneot' aserics which, when placed together, compose the die ofwhatever dimensions it may be made, said strip composing the die for one row of teeth across the le.

In the drawings Ihave represented that part of the die which conta-ins recesses for t-he forming of teeth. Every second strip is represented y as plain straight-edged; but it is obvious that every strip may contain notches for the formation of teeth, as desired.

rIh'e nature of my invention consists in constructing the die ot' strips of metal in such a manner as to ventilate the die and mold so as to allow the metal to run freely and ll the teeth to a degree of point and sharpness not heretofore attained in casting iron, the construction being as follows:

A A are strips of metal put together in a series of sufficient numbers to form the die for the ile or other article7 as required, each strip making a row of teeth across the le. BB are part c it is represented as a float, the edges of Y the strips of metal being plain and beveled,

and making one continuous cutting-edge, and l having a space for the discharge ot' air as in the teeth-(lies, as described and represented.

The great advantages resulting from this construction of die is, n'rst, the certain perfection in casting and giving sharpness to the teeth; second, ventilation ofthe casting and preventing blowing; and, thirdly, ease of removal from the mold.

I would have it understood that I do not claim as my invention the making chill-dies in one or more pieces for casting; but

.What I do claim as my invention, and desire to secure by Letters Patent, is-

The method herein described of casting floats, rasps, graters, Src., by means of aseries of chill-dies constructed and used as herein described. the'essential in the construction ot' such chills being that there is one piece for every series of teeth, and that the latter are cast inindentations formed between the chills, the same being formed substantially in the manner and for the purpose herein set forth and made known.

EZRA RIPLEY.

Witnesses:

E. L. BRUNDAGE, E. D. PARKE. 

